In most situations there is a need to check to what extent the predicted genetic progress according to a given breeding plan has been realized. Several methods for measuring the genetic change have been developed, and that proposed by Smith (1962) has been frequently used. This method measures how the sires of the cows in the population improve over time relative to known sires, whose genotypes are constant over time. Many assumptions have to be fulfilled and modifications have been suggested to overcome some of those, e.g. Syrstad (1974).

B. Danell, J.-A. Eriksson

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 8. Symposia (2), , 130–134, 1982
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